Power Steering (P/S) Pump - Suzuki sq-416-420-625 Service Manual

3B1-4 POWER STEERING (P / S) SYSTEM

POWER STEERING (P/S) PUMP

The power steering pump is a vane type and is driven by the V-ribbed belt from the crankshaft.
Model
Relieved
Hydraulic
pressure
pressure
control
Control
device
Power steering
pressure switch
Capacity
Specified fluid
FLOW CONTROL VALVE
As the discharge rate of the P/S pump increases in proportion to the
pump revolution speed, a flow control valve is added to control it so
that the optimum amount of fluid for steering operation is supplied
according to the engine speed (driving condition).
Described below is its operation at different engine speed.
1. Suction connector
2. O-ring
3. Pressure switch
4. Flow control valve
(Relief valve)
5. Spring
6. Plug
7. Pump cover
8. Cam ring
9. Vane
10. Rotor
11. Snap ring
12. Side plate
13. Pulley (pump shaft)
14. Oil seal
15. Pump body
16. Flow control valve Assembly
Vane type
2
6500 kPa (65 kg / cm , 924 psi)
. . . . . . . . . . . . . . . . . . . . . .
2
7000 kPa (70 kg / cm , 995 psi)
. . . . . . . . . . . . . . . . . . . . . . .
2
7350 kPa (73.5 kg / cm , 1045 psi)
. . . . . . . . . . . . . . . . . . . . . .
Flow control valve
Relief valve
Switch turns on (closes) when the
pressure is higher than 2500 – 3500 kPa
2
(25 – 35 kg / cm , 356 – 498 psi).
ECM uses this signal for idle speed control.
0.70 – 0.75 X
(1.48 / 1.23 – 1.58 / 1.32 US / Imp. pt)
8 8
DEXRON II, DEXRON III A / T fluid
or equivalent
G16 Type engine
J20 Type engine
H25 Type engine